Nix Desktop cannot discover its bundled CLI service #60676

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1. opencodejr commented on Oct 30, 2026

   

   opencodejrBot

   on Oct 30, 2026

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   Thanks for the detailed report. I reproduced the discovery mismatch from source, without building the Nix Desktop package itself:

   • I ran the CLI as a prod-channel build (OPENCODE_CHANNEL="prod", the same channel nix/opencode.nix uses) with serve --service and empty HOME/XDG directories. It registered only service-prod.json, and /api/info returned HTTP 200.
   • I then looked up the service the way Desktop does: Service.discover({ version }) with no registration file (sidecar-probe.ts, background-service.ts). It found nothing, because it only reads service.json. Pointing it at service-prod.json found the service right away.

   The results are the same on v2.2.3 and on the latest dev (6700dd8). The script below reproduces it.

   Related: #59403 (your Nix PR, which notes this timeout), #52121 and #52122.

   Reproduction script (repro.sh)

   #!/usr/bin/env bash
   # Reproduces #60676: a CLI built with OPENCODE_CHANNEL=prod (as nix/opencode.nix does) registers its
   # background service in service-prod.json, while Desktop's service lookup (Service.discover / ensure
   # with no `file`, as in packages/desktop/src/main/service/{sidecar-probe,background-service}.ts) only
   # reads service.json, so it never finds the healthy service.
   # Usage: REPO=/workspace/repo bash repro.sh
   set -u
   REPO=${REPO:-/workspace/repo}
   ROOT=$(mktemp -d /tmp/opencode/nix-svc.XXXX)
   export HOME=$ROOT/home XDG_STATE_HOME=$ROOT/state XDG_CONFIG_HOME=$ROOT/config XDG_DATA_HOME=$ROOT/data XDG_CACHE_HOME=$ROOT/cache
   mkdir -p "$HOME" "$XDG_STATE_HOME" "$XDG_CONFIG_HOME" "$XDG_DATA_HOME" "$XDG_CACHE_HOME" "$ROOT/project"
   cd "$ROOT/project"
   
   # 1. Run the CLI as a channel=prod build (the same compile-time define nix/opencode.nix produces).
   bun --conditions=browser \
     --define 'OPENCODE_CHANNEL="prod"' --define 'OPENCODE_VERSION="2.2.3"' \
     --preload="$REPO/packages/tui/node_modules/@opentui/solid/scripts/preload.js" \
     "$REPO/packages/cli/src/index.ts" serve --service >"$ROOT/serve.log" 2>&1 &
   PID=$!
   for i in $(seq 1 60); do ls "$XDG_STATE_HOME"/opencode/service*.json >/dev/null 2>&1 && break; sleep 1; done
   sleep 2
   
   echo "== registration files in \$XDG_STATE_HOME/opencode =="
   ls "$XDG_STATE_HOME/opencode" | grep -i service
   REG=$(ls "$XDG_STATE_HOME"/opencode/service*.json | head -1)
   URL=$(bun -e "console.log(JSON.parse(require('fs').readFileSync('$REG','utf8')).url)")
   PW=$(bun -e "console.log(JSON.parse(require('fs').readFileSync('$REG','utf8')).password ?? '')")
   echo "== backend health ($URL/api/info) =="
   curl -s -o /dev/null -w "HTTP %{http_code}\n" -u "opencode:$PW" "$URL/api/info"
   
   # 2. Look the service up exactly as Desktop does (no explicit registration file).
   cat >"$REPO/packages/desktop/.repro-discover.ts" <<'EOF'
   import { Service } from "@opencode/client/service"
   const found = await Service.discover({ version: "2.2.3" })
   console.log("Desktop-style Service.discover() ->", found ?? "undefined (service not found)")
   const withFile = await Service.discover({ version: "2.2.3", file: process.argv[2] })
   console.log("Service.discover({ file: service-prod.json }) ->", withFile?.url ?? "undefined")
   EOF
   echo "== Desktop-style discovery =="
   (cd "$REPO/packages/desktop" && bun .repro-discover.ts "$REG")
   rm -f "$REPO/packages/desktop/.repro-discover.ts"
   
   kill $PID 2>/dev/null; wait $PID 2>/dev/null
   pkill -f "$ROOT" 2>/dev/null

   Run it: bash repro.sh
2. opencodejr

   added

   reproduced

   on Oct 30, 2026
3. fredclausen

   added a commit that references this issue on Nov 13, 2026

   chore(upstream-fixes): track the two opencode-desktop workarounds

   ...

   9064c97